135 twin is super fast; bmw tech friend pdi'd it. But he did say this. For a few bucks more you're better off getting a 335. Getting a whole lot more car for just a bit more $$$$. it also has plastic fenders. to lighten the front end. The tech. that goes into the new bmw's is astronomical. they are practically tuned down race cars and cost a bunch less then a porsche' :-)